William h



(No Model.)

W. H. LATUS.

PAPER CUTTING MAOHINE. No. 306,626. Patented Oct. 14, 1884.

N4 PETERS. Phmmnhu n lwn Washington. DV 0.

chines in which the clamping-bar, which is WVILLIAMII. LATUS, OF BROOKLYN, NEW YORK.

PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 306,626, dated October 14, 1884.

Application filed November 29, 1881., (No model.)

To on whom it may concern Be it known that I, WILLIAM H. LATUS, of Brooklyn, in the county of Kings and State of New York, have invented certain new an (1 useful Improvements in Paper-Cutting Machines; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, mak* ing part of this application.

My invention relates to that kind of ma first forced down onto the paper to be cut and which firmly holds the paper in place on the table during the cutting operation, serves to resist the force employed to move the cuttingknife, so that the pressure of the clampingbar upon the paper to be cut is increased in proportion to any increased force necessary to be applied to the knife or shearing-blade; and my invention consists in certain novel combinations of devices, to be hereinafter more particularly described and claimed, by means of which machines of the kind just above alluded to shall be rendered more efficient in operation and capable of producing better results.

To enable those skilled in the art to which my invention relates to make and use machines embracing the same, I will now proceed to more fully explain my said invention, referring byletters to the accompanying drawings, in which Figure l is a front view or elevation of a paper-cutting machine made according to my invention. Fig. 2 is a vertical section of the same, taken at the line :0 x of Fig. 1, and looking in the direction indicated by the arrow at the last named figure. Fig. 3 is a detail'partial sectional view at' the same plane of section as Fig. 2, but showing a modification in the construction of certain parts of the machine.

In the several figures the same part will be found designated by the same letter of reference.

A is the main frame, which supports the work-table B and the moving parts of the machine.

I I are two X-shaped brace-framcs, which are arranged between the opposite vertical sides of the main frame A, as shown, are bolted thereto, and afford bearings'i ifor the countershaft Z, that carries at one end the chain-wheel L and at the other end the bevel-gear H.

Running transversely to the countenshaft Z is the main driving-shaft J, mounted to turn in suitable hearings in the main frame A, and provided with a fast and aloose pulley, (seen, respectively, at T and L on which pulleys runs the main driving-belt, adapted, as usual, to be shipped to one or the other, as occasion may require.

On the main shaft J is keyed a bevel-pinion, J that engages with and drives the gear H of the counter-shaft, and from the wheel L of said counter-shaft passes upward and over the sheave-wheel h a chain, P. This chain is made fast at or near one end to the chain-wheel L, and, after passing partially around the wheel h, is fastened at its other end to an adjustable dog, 5 which is secured to the lever Guby means of a thumb-screw, h that passes through said dog and a slot, 2, in lever G, and is adapted to clamp the dog to said .lever at any desired point. The said sheavewheel his journaled on the cross-bar F, and

(See Fig. 1.)

the said'lever G is pivoted at m to one side of the main frame A, all asclearly shown. The lever G is a bent lever, by preference, and to its lower longer arm is attached a weight, K, while its upper shorter arm is coupled by a connecting-rod, d, to one end of the knife-bar or shearing-blade D, which latter is formed with oblique guide-slots 0 0, in which work the rollered pins 19, that force the knife to descend (and return to its normal position) with an oblique movement, in the usual manner.

0 is the clampingbar, which, like bar F, is arranged tov be capable of the usual vertical movements up and down, and which is connected by vertical tie-rods c e to the said bar F, so that any enforced downward movement of bar F will cause a like movement of'the knife-bar D, and any upward movement of bar D will cause a like movement of bar F.

From the front surface of the clamping-bar 0, near its middle, projects an anti-friction roller, a, which, at certain times, rests on a shoulder, at b, of the knife-bar D, (see Fig. 2 and dotted "lines at Fig; 1,) so that whenever the said knife-bar may be pulled down by the descent of the clamping-bar 0 (through the medium of roller a, acting on the shoulder or shelf b) the knife-bar D may descend obliquely, while the barG descends vertically, without causing any undue friction between the impinging devices a and b.

The main driving-shaft J may be provided with a fly-wheel, as seen at S; and, in lieu of the arrangementof fast and loose pulleys T and L it may be found preferable to have only one pulley T, (for instance, arranged to clutch to and unclutch from the shaft J, in which case the shipper-bar, instead of operating to ship the belt, will of course be adapted to shipthe clutch.

I have not shown the shipper mechanism, as it may be similar to such as now used on other machines, and willbe operated from the cutter-bar in a manner well known.

In the operation of the machine, the pile to be out having been placed on the table, as seen at E, and thedriving-shaft J having'been thrown into gear, the wheel H is driven by pinion J, and the counter-shaft Z thus caused to" rotate in the direction indicated by arrow at Fig. 1'. This causes the chain-wheel L on shaft Z to wind up the chain 1?, and the resistanceto' the take-up'of the chain occurring-first at the sheave h,- the effect is to pull down the latter, (as it is rotated on its axis,)and consequently to" draw the bar F and the bar 0 down into the position seen*-- 1'. 0., until the bar 0 comes hard onto thepileof paper E, but

nation, with the frame, of a knife-lever pivoted thereto, and operating to actuate theknifebar or cutter, reciprocating clamp provided. 'with a pulley or chain wheel, an actuatingas the roller a of the bar 0 overhangs and rides on the shoulder b of the knife-bar ID,- the latter is, of course, to also move down with bar 0, as shown. The bars Cand F and the sheave It being now unabl'eto further descend the pile Eresisting the further downward motion of the bar 0, the continued winding up of chain P onwh'eel' L necessarily effects the liftingof the lower weighted end of lever G,

and thereby the pitman d iscaused to pull l and knife-bar and the weighted lever G, the 'chain-wheel' L, provided with a driving or .power shaft, the sheave h, mountedon the clamp-frame, and a chain, 1, having one'end down the knife D (while the bar 0 remains stationary) and effect the cutting of the pile of paper. When the knife shall have gone clean through the pile and onto the cuttingboard' or wooden surface of table'B, the ship ping mechanism will instantly throw the'shaft .I out of gear, as usual, when the weight K will cause the lower end of lever G to return to I provided with a sheave; h, the'driving chainwheel L, lever G, and chain 1 an adjustable dog, 9, mounted onthe lever G,and having -one end of the chain attached to it, all substantially as set forth.

its original position, in the course of which movement of said lever the knife-bar D will first be elevated until itsshoulder-likedeviceb comes into contact with theroller a of the bar O, and then the latter will alsobelifted until the lever G shall have assumed its normal or original position, and all thep'arts be set for the next operation or use of the machine.

It will be seen that in a machine made as shown and described, when the clamping-bar Cshallhave been brought down onto the pile, T

the subsequent movements of the workin g p arts 7 will cause a pressure of bar (3 on the pile proportionate to the leverage and weight of the weight K plus the leverage exercised by the block-and-tackle arrangement of the chain P and wheels L h, and that, therefore, the paper I will be clamped very securely and in propertion to the force applied to the cutting device.

By the arrangement of devices shown, the

leverage of the pull on either the clampingat Fig. 3-, (in a plane at right angles to that of I the said bar,) and carrying the chain P backward, as there shown, and locating the chainwheel L on the main drivi'ng shaft I.

Of course other variations in the details of construction may be made without changing the novelplan of construction peculiar to my improved machine.-

What I claim as new, and desire tosecu re by Letters Patent, is-

1. In a paper-cutting machine, the combichain', and a winch, the whole organized subi stantially as described, whereby the said chain imay be' caused by direct action to draw the said clampand knife'levertoward each other, as set forth.

2. In combination With the elam'pingframe fast to wheel L and the other to lever G, and

irunning over the sheave 71 all substantially as set forth;

3. In combination with the clamp-frame In witness whereof I have hereunto set my WM. II. LATUS.

In presence of- JOHN B. SUYDAM, G. W. DUIUY.

IIO 

